WASHINGTON (WUSA) -- There will be many amazing stories among the thousands of runners competing in Sunday's Marine Corps Marathon. They include the story of Brian Boyle.

Brian nearly lost his life in 2004 in a crash near his home in Welcome, Maryland. Brian lost 60 percent of his blood, and during many operations he received 36 blood transfusions and 13 plasma treatments. He was in a medically-induced coma for two months followed by months of intensive rehab.

Brian now competes in triathlons and other races. Brian was invited back to compete in the Marine Corps Marathon and Brian is running for Team Red Cross to thank blood donors.

Brian represents the many blood recipients whose lives have been saved, in part, due to Red Cross blood donors. In Nov. 2008, Men's Health magazine named Brian one of its 20 Heroes of Health and Fitness.

Brian told us more about his story on Friday morning, which you can see in the video above.